SpeedStream Router User Guide
Appendix D:
Acronyms and Technical Concepts
Acronyms
AAL5 ATM Adaption Layer 5
ADS Attack Detection System
ATM Asynchronous Transfer Mode
ATU ADSL Termination Unit
ATU-C ADSL Termination Unit - Central Office; refers to location at the CO
aggregation point.
ATU-R ADSL Termination Unit - Remote; refers to location at the customer premises
CHAP Challenge-Handshake Authentication Protocol
CRC Cycle Redundancy Checking
CO Central Office
DDoS Distributed Denial of Service
DHCP Dynamic Host Configuration Protocol
DMZ Demilitarized Zone
DNS Domain Name Service
DSL Digital Subscriber Line
DSLAM Digital Subscriber Line Access Multiplexer
Ethernet Network standard for LAN communications
FEC Forward Equivalence Class
firmware Software, in binary form, stored within a flash PROM
frames Data packet
Gateway Router
GUI Graphical User Interface
ICMP Internet Control Message Protocol
IGD Internet Gateway Device
IPCP IP Control Protocol
ISP Internet Service Provider
LCP Link Control Protocol
LLC Logical Link Control layer
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